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. 2006 Sep 12;95(6):705–709. doi: 10.1038/sj.bjc.6603328

Table 1. The 1983 AJCC staging system for oesophageal cancer.

Stage Criterion
I <5 cm in length, nonobstructing, noncircumferential
II > 5 cm in length or obstructing or circumferential
III Evidence of extra oesophageal spread (computed tomography scan indicating invasion of surrounding structures or clinical evidence such, as recurrent laryngeal nerve involvement, positive pleural effusion, tracheoesophageal fistula, sympathetic nerve involvement, phrenic nerve involvement or widened mediastinum on chest radiograph)